2-Fluoro-4-Nitrobenzoic Acid Tci Equivalent: Technical Specs
Melting Point 170°C vs TCI 172.0 to 176.0 °C Range: Implications for Crystallization Purity
When evaluating 2-Fluoro-4-nitrobenzoic acid for critical synthesis pathways, the melting point serves as a primary indicator of lattice energy and crystalline integrity. While general market specifications often cite a range between 172.0 to 176.0 °C, operational data suggests that deviations below 170°C frequently indicate solvent inclusion or the presence of positional isomers. At NINGBO INNO PHARMCHEM CO.,LTD., we monitor crystallization kinetics closely because a depressed melting point can signal residual moisture or incomplete purification during the final recrystallization stage.
From a field engineering perspective, we have observed that trace impurities, specifically 3-fluoro-4-nitro isomers, can disrupt the crystal lattice structure. This disruption does not always manifest immediately in standard GC analysis but becomes evident during thermal profiling. For R&D teams scaling up nucleophilic aromatic substitution reactions, ensuring the melting point aligns with the upper end of the standard range is crucial for consistent reaction kinetics. If the melting point is broad or depressed, it may lead to unpredictable solubility profiles in polar aprotic solvents.
Correlating Purity Grades ≥98.0% (GC) with Thermal Stability in 2-Fluoro-4-nitrobenzoic acid
Purity specifications of ≥98.0% (GC) are standard for this Benzoic acid derivative, but purity alone does not guarantee thermal stability during exothermic coupling reactions. High-performance liquid chromatography (HPLC) and Gas Chromatography (GC) provide quantitative data, yet they may not detect trace metal catalysts remaining from the fluorination process. These trace metals can act as degradation initiators when the material is subjected to elevated temperatures during downstream processing.
Thermal stability is particularly relevant when this Fluorinated intermediate is used in high-temperature coupling steps. We recommend verifying the thermal degradation threshold alongside standard purity metrics. In our experience, batches with higher acidic impurities may exhibit earlier onset of decomposition. Procurement managers should request thermal gravimetric analysis (TGA) data for critical batches to ensure the material withstands the specific thermal load of their manufacturing process without generating unforeseen byproducts.
Critical COA Parameters: CAS 403-24-7 Verification and Impurity Limits Affecting MP
Verification of CAS 403-24-7 is the foundational step in quality assurance. However, the Certificate of Analysis (COA) must extend beyond simple identity confirmation. Critical parameters include the quantification of related substances, particularly regioisomers that share similar mass spectra but differ in reactivity. Impurity limits affecting the melting point are often overlooked in standard commercial grades but are vital for pharmaceutical intermediate synthesis.
When reviewing a COA, pay close attention to the 'Related Substances' section. A total impurity profile below 2.0% is typical for industrial purity grades, but specific individual impurities should ideally remain below 0.5% to prevent downstream purification bottlenecks. We advise R&D teams to correlate the reported impurity profile with the observed melting point range. A discrepancy here often points to analytical method variations rather than actual product quality issues. Please refer to the batch-specific COA for exact impurity profiles.
Technical Specs Verification: Molecular Weight 185.11 and Formula C7H4FNO4
Accurate stoichiometry depends on verifying the Molecular Weight of 185.11 and the molecular formula C7H4FNO4. These constants are essential for calculating molar equivalents in reaction setups. Deviations in measured molecular weight during mass spectrometry verification can indicate salt formation or hydration, which alters the effective concentration of the active acid in solution.
The following table outlines the key technical parameters typically expected for this chemical entity compared against standard verification metrics:
| Parameter | Standard Specification | Verification Method |
|---|---|---|
| CAS Number | 403-24-7 | Registry Verification |
| Molecular Formula | C7H4FNO4 | Elemental Analysis |
| Molecular Weight | 185.11 g/mol | Mass Spectrometry |
| Purity (GC) | ≥98.0% | Gas Chromatography |
| Melting Point | 174-177°C | DSC / Capillary |
| Appearance | Crystalline Powder | Visual Inspection |
For detailed batch data, please review the technical documentation available on our 2-Fluoro-4-nitrobenzoic acid product specifications page. Consistency in these parameters ensures reproducible results in multi-step synthesis routes.
Bulk Packaging Solutions and Hazard Compliance for Fluorinated Intermediates Procurement
Logistics for fluorinated intermediates require strict adherence to physical packaging standards to maintain product integrity during transit. We utilize high-density polyethylene (HDPE) liners within steel drums or Intermediate Bulk Containers (IBCs) to prevent moisture ingress and contamination. Proper sealing is critical because hygroscopic absorption can alter the physical properties of the acid before it reaches the production line.
Hazard compliance focuses on accurate classification and labeling according to global transport regulations. This material is classified as an irritant, requiring appropriate personal protective equipment (PPE) during handling. Our packaging protocols ensure that drums are nitrogen-blanketed where necessary to minimize oxidation risks during long-term storage. We focus on robust physical containment to ensure the material arrives in the same condition it left the facility, without making regulatory environmental claims.
Frequently Asked Questions
What is the typical lead time for bulk orders of CAS 403-24-7?
Lead times vary based on current inventory levels and production schedules. Please contact our sales team for a specific timeline regarding your required tonnage.
Can you provide custom synthesis for modified nitrobenzoic acid derivatives?
Yes, we offer custom synthesis capabilities for specific structural analogs. Our technical team can evaluate feasibility based on your target specifications.
How is the purity verified before shipment?
Every batch undergoes rigorous testing using GC and HPLC methods. A batch-specific COA is generated and available upon request for verification.
What packaging options are available for international shipping?
We offer various packaging solutions including 25kg drums, 200L drums, and IBCs, tailored to meet international shipping safety standards.
Sourcing and Technical Support
Securing a reliable supply of high-quality fluorinated intermediates is essential for maintaining continuity in pharmaceutical and agrochemical manufacturing. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing consistent quality and robust technical support for your synthesis needs. Our engineering team is available to discuss specific application challenges and ensure material compatibility with your processes.
Ready to optimize your supply chain? Reach out to our logistics team today for comprehensive specifications and tonnage availability.